Thanks, I wondered why my router kernel went from 4.xx to 6.1 after flashing OpenWRT, especially when MediaTek is notorious for poor kernel support. This actually makes me respect OpenWRT even more.
6.x kernel is not expected to land anytime soon (late this year or early next year maybe?)
If you have a 6.x kernel, this is probably a fork of OpenWrt.
Doesn't mean everything MTK does shines under the sun, but in Linux WiFi, they are probably the most open and well supported in the modern age.